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Finding the Fourth Proportional to 42,662.69, 63,993.80 and 11,072.73

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Solution

The fourth proportional to 42,662.69, 63,993.80 and 11,072.73 is: 16,609.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,662.69 : 63,993.80 = 11,072.73 : x
  2. Step 2: Convert to fraction form
    42,662.69/63,993.80 = 11,072.73/x
  3. Step 3: Cross multiply
    42,662.69x = 63,993.80 × 11,072.73
  4. Step 4: Simplify right side
    42,662.69x = 708,586,069.07
  5. Step 5: Solve for x
    x = 708,586,069.07/42,662.69
  6. Step 6: Final answer
    x = 16,609.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.